Portable heat gun

Abstract

The utility model provides a portable heat gun, and relates to the technical field of welding tools. Comprising a shell at least provided with a holding part, and an air blowing head is arranged at the head end of the shell; a heating element, an air blowing assembly and a main control circuit board provided with a microprocessor are arranged at the rear end of the air blowing head; the heating element and the blowing assembly are electrically connected with the main control circuit board; the main control circuit board is provided with an electric wire which extends out of the shell and is electrically connected to the power supply unit. The technical scheme of the portable heat gun has the advantages of innovativeness, practicability, market competitiveness, feasibility and the like, the problems that a traditional table type heat gun is large in size, heavy in weight and the like can be effectively solved, and the requirements of the market for portability and multifunctionality are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding tool technical field, specifically, relate to a portable hot air gun BACKGROUND

[0002] At present, along with the rapid development of industrial manufacturing, maintenance etc. field, the demand of portable, high efficiency hot air gun is increasing day by day.

[0003] However, the traditional desktop hot air gun has the problems of large size, heavy weight, non-intuitive temperature, large use noise, etc., which limits its portability and use range. Therefore, the utility model provides a portable hot air gun to at least partially solve the problems in the prior art. UTILITY MODEL CONTENT

[0004] In order to overcome the above problems or at least partially solve the above problems, the utility model embodiment provides a portable hot air gun. The shortcomings of the traditional air gun are solved by innovative structure and material application, the portability and visibility are improved, the user is more intuitive to the air gun temperature and wind speed, and the user experience is enhanced. By increasing the screen display function and LED light prompting function, the user can quickly and directly see the working temperature, wind power and other working conditions of the current fan, and the user can quickly set the working temperature or wind speed through the key, and there is a cold wind mode to speed up the cooling speed when cooling.

[0005] The embodiment of the utility model is realized as follows:

[0006] The application embodiment provides a portable hot air gun, which comprises:

[0007] At least a holding part of the shell, the head end of the shell is provided with a blowing head;

[0008] The rear end of the blowing head is provided with a heating element and a blowing assembly, and a main control circuit board provided with a microprocessor;

[0009] The heating element and the blowing assembly are electrically connected to the main control circuit board; the main control circuit board is provided with an electric wire extending out of the shell and electrically connected to a power supply unit.

[0010] In some embodiments of the utility model, the blowing assembly is a brushless fan.

[0011] In some embodiments of the utility model, the heating element is made of high-resistance material.

[0012] In some embodiments of the utility model, further comprising: a protective isolation piece, the protective isolation piece is arranged between the main control circuit board and the blowing assembly.

[0013] In some embodiments of the utility model, still include surface part protrude from the shell's wind speed switch, the wind speed switch electric connection to the main control circuit board.

[0014] In some embodiments of the utility model, still include display unit and / or LED lamp, display unit and LED lamp electric connection to the main control circuit board;

[0015] The display unit is liquid crystal screen or segment type digital display unit.

[0016] In some embodiments of the utility model, still include the temperature sensor in the blow head, the temperature sensor electric connection to the main control circuit board.

[0017] In some embodiments of the utility model, the shell is made of heat insulation material.

[0018] In some embodiments of the utility model, the heating element is resistance heating wire or ceramic heating element.

[0019] In some embodiments of the utility model, the power supply unit is rectifier conversion unit.

[0020] In some embodiments of the utility model, the position of the shell and the blow head connection, still be equipped with heat dissipation hole.

[0021] Relative to prior art, the embodiment of the utility model at least has following advantages or beneficial effects:

[0022] Through at least the shell of holding part, the head end of shell is equipped with blow head;The rear end of blow head is equipped with heating element and blow assembly, and the main control circuit board with microprocessor is set up;The heating element and blow assembly are electrically connected with the main control circuit board;The main control circuit board is equipped with the wire that extends out the shell, and is electrically connected to the power supply unit.It has the advantages of innovation, practicality, market competitiveness and implementability to the portable hot air gun technical scheme, can effectively solve the problems such as big size and heavy weight of traditional bench type hot air gun, satisfy the demand of portability and multifunctionality to market. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, should understand, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0024] Figure 1The utility model discloses a portable hot air gun's exploded structure schematic view of one embodiment.

[0025] In the drawing: 100, shell; 101, blowing head; 102, main control circuit board; 103, heating piece; 104, blowing assembly; 105, electric wire; 106, power supply unit; 107, protection isolation piece; 108, heat dissipation hole. DETAILED DESCRIPTION

[0026] In order to make the utility model embodiment purposes, technical scheme and advantages more clearly, below will combine the drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly, completely described, obviously, the described embodiment is the part embodiment of the utility model, instead of all the embodiment. The components of the utility model embodiments described and shown in the drawing here can be arranged and designed in various different configurations.

[0027] Embodiment 1

[0028] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, each of the following embodiments and each feature in the embodiment can be combined with each other.

[0029] Please refer to Figure 1 The utility model embodiment provides a portable hot air gun, include: at least the shell 100 of holding part, the head end of shell 100 is equipped with blowing head 101, blowing head 101 rear end is equipped with heating element 103 and blowing assembly 104, and is equipped with the main control circuit board 102 of microprocessor, heating element 103 and blowing assembly 104 with main control circuit board 102 electricity is connected, main control circuit board 102 is equipped with the electric wire 105 of extending out shell 100, and is connected to the power supply unit 106. Solveed the problem such as big volume, heavy weight, limit its portability and use range of traditional desktop hot air gun.

[0030] In this embodiment, the heating element 103, the blowing assembly 104 and the main control circuit board 102 are innovatively integrated in a housing 100 provided with a holding part by the above-mentioned portable hot air gun. Compared with the traditional bench-type hot air gun, the compact design greatly reduces the volume, making the product more portable and convenient to carry. For example, the bench-type hot air gun is usually large in size and heavy, while the portable hot air gun significantly reduces the overall volume and weight by reasonable layout while meeting the functional requirements. The arrangement of the above-mentioned main control circuit board 102 enables the heating element 103 and the blowing assembly 104 to achieve intelligent control. The use of microprocessors can accurately adjust the heating temperature and blowing speed to adapt to different use scenarios and needs, which is a function that traditional hot air guns do not have. For example, in some application scenarios that require precise temperature control, the portable hot air gun can achieve the ideal heating effect through the regulation of the microprocessor. Through the above-mentioned portable design, it can be conveniently carried to different places for use, whether it is outdoor work, industrial production or home repair, etc. It can easily meet the needs of users. Its small size and light weight make it easy for users to carry at any time and anywhere, without space restrictions. Due to its portability, the hot air gun can be applied in multiple fields, such as automobile repair, electronic device repair, handcrafting, etc. The traditional bench-type hot air gun is limited in its use in some specific scenarios due to its large size and heavy weight, while the portable hot air gun can be used flexibly in different environments, broadening its application range.

[0031] As a more preferred embodiment, the blowing assembly 104 is a brushless fan. The use of a brushless DC motor fan effectively reduces noise. The above-mentioned heating element 103 is made of high-resistance material, for example, a resistance heating wire, which solves the problems of large size, heavy weight, non-intuitive temperature, and large use noise of traditional bench-type hot air guns. Through the integration of the heating wire and the intelligent temperature control system, the structure is simplified, the material cost and production complexity are reduced, the weight is lightened, and the compact structure makes the hot air gun more portable, greatly improving the flexibility of the use range.

[0032] Embodiment 2

[0033] The utility model discloses an embodiment provides a kind of portable hot air gun, it includes: at least the shell 100 of gripping portion is equipped, the head end of the shell 100 is equipped with blowing head 101;The rear end of the blowing head 101 is equipped with heating element 103 and blowing assembly 104, and main control circuit board 102 with microprocessor is provided;Heating element 103 and blowing assembly 104 are electrically connected with the main control circuit board 102;The main control circuit board 102 is equipped with extending the shell 100, and electric wire 105 electrically connected to power supply unit 106.It shell 100 is made of heat insulation material.In the above blowing head 101 can also be provided with temperature sensor, the temperature sensor is electrically connected to the main control circuit board 102.Heat gun shell 100 uses heat insulation material, and the real-time monitoring of sensor greatly improves the security of use, and user is not easily scalded and the risk of fire.

[0034] As an example, the shell 100 of the above hot air gun can be made of glass fiber or ceramic fiber material, glass fiber is a kind of excellent inorganic non-metallic material;It can also use porous heat insulation material, which belongs to plastic material, specifically it can be polystyrene foam (EPS) or polyurethane foam (PU), both have good heat insulation performance.

[0035] As a more preferred embodiment, heating element 103 is the core component of air gun, the heat generated by air gun is all realized by the component that electric energy is converted into heat energy.The component is usually made of high-resistance material, which has high resistivity and heat conductivity.When electric current passes through heating element, the element converts electric energy into heat energy to provide heat source for hot air gun.The above-mentioned heating element 103 can also be a ceramic heating element.Using ceramic heating element instead of resistance heating wire, ceramic heating software is not easy to oxidize at high temperature, has long service life and stable performance;Ceramic itself is resistant to high temperature, not easy to burn, and has high safety;Using ceramic heating element can better reduce loss.

[0036] As a more preferred embodiment, the power supply unit 106 is a rectifier conversion unit.The above-mentioned main control circuit board 102 is powered by the above-mentioned rectifier conversion unit.For example, rectifier conversion unit 106 can convert mains (usually 220V AC) into precise DC voltage through rectification, filtering and voltage stabilization and a series of circuit operations, or can be converted into pulse DC, which can reduce electromagnetic interference when powering the circuit board.

[0037] Embodiment 3

[0038] The utility model discloses a portable hot air gun, wherein, further comprising: a protective isolation piece 107, the protective isolation piece 107 is arranged between the main control circuit board 102 and the blowing assembly 104. The surface of the protective isolation piece 107 can be provided with a conductive layer, and the conductive layer can be grounded. Since the fan uses a motor, which is an electromagnetic drive material, the fan and the main control circuit board 102 are isolated by the protective isolation piece 107, preventing electromagnetic changes during fan operation from interfering with the circuit and causing other adverse effects. At the same time, the protective isolation piece 107 can also protect the fan, as the fan is relatively close to the heating element 103. The protective isolation piece 107 can also prevent the heat emitted by the heating element 103 from affecting the main control circuit board 102.

[0039] It should be noted that although the fan directs most of the heat towards the blowing head 101 during operation, a small amount of heat is still radiated in other directions. The protective isolation piece 107 with heat insulation effect can prevent the heat from adversely affecting the components on the main control circuit board 102.

[0040] As a preferred embodiment, the hot air gun further comprises a wind speed switch protruding from the shell 100, the wind speed switch being electrically connected to the main control circuit board 102; and a temperature sensor in the blowing head 101, the temperature sensor being electrically connected to the main control circuit board 102. The main control circuit board 102 is also connected to a display unit and / or an LED light. The display unit can be a liquid crystal screen or a segment digital display unit. The working state and temperature state of the hot air gun can be displayed intuitively, and the wind speed can be adjusted by the wind speed switch. In addition, a temperature adjustment switch can be provided to adjust the temperature range. The temperature control system composed of the above-mentioned sensor and the main control circuit board 102 with a microprocessor ensures stable temperature output of the hot air gun during operation and prevents the temperature from being too high or too low. The temperature control system composed of the temperature sensor and the control circuit detects the temperature of the heating element in real time and feeds back the temperature to the control circuit. The control circuit compares the feedback temperature value with the set temperature value and adjusts the current size to control the heating speed of the heating element, so that the output temperature of the hot air gun is maintained within a stable range, equivalent to constant temperature output.

[0041] As a preferred embodiment, the shell 100 and the blowing head 101 are connected at a position provided with a heat dissipation hole 108. In addition, a brushless DC motor fan can be used under cost constraints.

[0042] In the present application, the shortcomings of traditional air guns are solved by innovative structure and material application, the portability and visibility are improved, the user can more intuitively understand the temperature and wind speed of the air gun, and the user experience is enhanced. The screen display function and LED light prompting function are added, the user can quickly and directly see the working temperature, wind power and other working conditions of the current fan, and the user can quickly set the working temperature or wind speed through the key, and there is a cold wind mode to speed up the cooling speed during cooling. Specifically, the airflow is generated by the single-chip microprocessor control brushless fan rotation, the airflow is heated by the heating device, and finally the hot air is formed at the air outlet. In the control process, an intelligent temperature control system is adopted to monitor the temperature in real time and realize accurate temperature control and protection. The working principle of the portable hot air gun is mainly based on three core parts: the heating element 103, the temperature control system and the airflow control system. The heating element 103 is the core component of the air gun, and the heat generated by the air gun is converted from electrical energy to heat energy through this component. This component is usually made of high-resistance material, which has high resistivity and good thermal conductivity. When the current passes through the heating element, the element converts electrical energy into heat energy to provide a heat source for the hot air gun. The temperature control system ensures that the hot air gun maintains stable temperature output during operation and prevents the temperature from being too high or too low. This part is composed of a temperature sensor and a control circuit. The temperature sensor detects the temperature of the heating element in real time and feeds back the temperature to the control circuit. The control circuit compares the feedback temperature value with the set temperature value and adjusts the current size to control the heating speed of the heating element, so that the output temperature of the air gun is maintained within a stable range. The airflow control determines the wind power output intensity and direction of the air gun. The air gun is internally provided with a brushless fan that inhales external air and blows it to the heating element to form an air flow. When the air flow passes through the heating element, the heating element heats the air flow to form hot air. The speed of the fan determines the strength of the wind power of the air gun, and the speed of the fan is controlled by the microprocessor.

[0043] The main control circuit board 102 of the present application is provided with a microprocessor, i.e. a single-chip microcomputer; the above-mentioned single-chip microcomputer realizes the center of air gun control, heating control, wind speed control, display screen display, prompt light display and other controls, which are all completed by the single-chip microcomputer. When cooling is needed, a cold wind mode can be selected for rapid cooling. A high-strength lightweight material is used to make the shell, combined with a compact air duct design, which greatly reduces the volume and weight. The whole machine includes a shell (plastic), an air duct (plastic and a ventilation pipe), a support, a heating element, a fan (a direct-current brushless motor), and a control board (a single-chip microcomputer and peripheral circuits); the operating principle of the whole machine is that the fan inhales external air and blows it to the heating element to form hot air output.

[0044] The good heat insulation material of the shell can not feel heat during use, real-time monitoring of the sensor is added on the software, and the heating is stopped immediately when the sensor is abnormal to ensure safety.The shortcomings of the traditional air gun are solved through innovative structure and material application, the portability and visibility are improved, the user can be more intuitive about the temperature and wind speed of the air gun, and the use experience of the user is enhanced.The screen display function and LED light prompting function are added, the user can directly see the working temperature, wind speed and other working conditions of the fan, the user can quickly set the working temperature or wind speed through the key, and the cold wind mode can speed up the cooling speed when cooling.The good heat insulation material of the shell can not feel heat during use, real-time monitoring of the sensor is added on the single-chip microcomputer, and the heating is stopped immediately when the sensor is abnormal to ensure safety.

[0045] It should be noted that each of the embodiments in the specification adopts a progressive manner for description, and each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. Although the optional embodiments of the utility model have been described, the skilled in the art can make other changes and modifications to the embodiments once the basic creative concept is known. Therefore, the appended claims are intended to include the optional embodiments and all changes and modifications falling within the scope of the embodiments of the utility model.

[0046] Finally, it should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between the entities. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such article or terminal device. Without more limitation, the element defined by the statement "including a" does not exclude the presence of another identical element in the article or terminal device including the element.

[0047] The above describes the technical solutions provided by the utility model in detail, the principle and implementation mode of the utility model are described in this paper through specific examples, and for the general skilled in the art, according to the principle and implementation mode of the utility model, the specific implementation mode and application range will be changed, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A portable hot air gun, characterized by comprising: Comprise: A housing (100) provided with at least a holding part, a head end of the housing (100) is provided with a blowing head (101); A rear end of the blowing head (101) is provided with a heating element (103) and a blowing assembly (104), and a main control circuit board (102) provided with a microprocessor; The heating element (103) and the blowing assembly (104) are electrically connected with the main control circuit board (102); the main control circuit board (102) is provided with an electric wire (105) extending out of the housing (100) and electrically connected to a power supply unit (106).

2. The portable hot air gun according to claim 1, characterized by The blowing assembly (104) is a brushless fan.

3. The portable hot air gun according to claim 1 or 2, characterized by The heating element (103) is made of high-resistance material.

4. The portable hot air gun according to claim 1 or 2, characterized by Further comprise: A protective isolation piece (107) is arranged between the main control circuit board (102) and the blowing assembly (104).

5. The portable heat gun of claim 1, wherein Further comprise a wind speed switch protruding from a surface part of the housing (100), the wind speed switch is electrically connected to the main control circuit board (102).

6. The portable hot air gun according to claim 1, wherein Further comprise a display unit and / or an LED lamp, the display unit and the LED lamp are electrically connected to the main control circuit board (102); The display unit is a liquid crystal screen or a segment type digital display unit.

7. The portable heat gun of claim 1, wherein Further comprise a temperature sensor located in the blowing head (101), the temperature sensor is electrically connected to the main control circuit board (102).

8. The portable heat gun of claim 1, wherein The housing (100) is made of heat insulation material.

9. The portable heat gun according to claim 3, wherein The heating element (103) is a resistance heating wire or a ceramic heating element.

10. The portable heat gun of claim 1, wherein The power supply unit (106) is a rectifier conversion unit.

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